Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Gretchen Nicole Karstens, MD

Individual provider Pediatrics Physician · NPI 1669405189

Dr. Gretchen Nicole Karstens, MD is a Pediatrics Physician in Duluth, Minnesota. Licensed in Minnesota. Registered with an NPI since 2006.

Licensed in
MN
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1012 E 2nd St
Duluth, MN 55805-2200
Phone: (218) 249-7870
Fax: (218) 249-7801
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 49164 (MN)

Record details

NPI number1669405189
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 8, 2006
Last updated in NPPESDecember 4, 2020
Certification dateDecember 4, 2020

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